Phase Development During Mixed-Oxide Processing of A Na0.5K0.5NbO31-x-LiTaO3x Powder

摘要：

　　Powders of the solid solution series Na0.5K0.5NbO31-x-LiTaO3x,with x =0.06,are shown to transform from an orthorhombic to a tetragonal crystal system as calcination temperature is increased in the range 850 ℃ to 1100 ℃.Addition of 3 wt% of each alkali carbonate prior to calcination allows retention of the orthorhombic phase to 1100 ℃.The latter changes in phase content are attributed to a partial compensation of alkali oxide volatilisation losses.The approach of adding extra alkali carbonates lead to an increase in d33 coefficient in sintered ceramics.

关键词： Chemical reaction Environmentally benign Piezoelectric

作者: T.A.Skidmore T.Stevenson T.P.Comyn S.J.Milne

作者单位: Institute for Materials Research,Houldsworth Building,University of Leeds,Leeds,LS2 9JT,UK

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 1886-1889

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）